lead·er
n.
One that leads or guides.
One who is in charge or in command of others.
One who heads a political party or organization.
One who has influence or power, especially of a political nature.
Music.
A conductor, especially of orchestra, band, or choral group.
The principal performer in an orchestral section or a group.
*******************************
I'd like this source to tell me what part of that definition matches Mike Jackson